var Single = require('./single_class.js');

var singleObj1 = new Single('2017-05-16');
var singleClass1 = singleObj1.getInstance('2017-05-16');
singleClass1.show();

var singleObj2 = new Single('2017-05-15');
var singleClass2 = singleObj2.getInstance('2017-05-15');
singleClass2.show();